Patrick blackie



(Nomodel.) PI BLACKIE 8v J. NIS-BET.

. ANIMAL SHEARS. No. 460,357. Patented Sept. 29, 1891.

fue Nnnms paens co., mow-umu., msmnsrou, n. c.

UNITED STATES PATENT OEETCE.

PATRICK BLAOKIE, OF REDFERN, NEAR SYDNEY, AND JOHN NISBET, OF OOOLABAH, NEV SOUTH YVAL'ES.

ANIMAL-SH EARS.

SPECIFICATION forming part of Letters Patent No. 460,357, dated September 29, 1891.

Application tiled October 13, 1890. Serial No. 368,048. (No model.)

To all whom it may concern: to the diametang O', causing the lever O to Beit known that we, PATRICK BLACKIE, enreciprocate on fulcru m A4 and to give motion 5o gineer, residing at Redfern, near Sydney, in to the lever O4, which fits between the jaws the British Colony of New South Wales, and O3 of lever C and moves on the same fulcrum 5 JOHN NISBET,grazie1, residing at Ooolabah, in A This lever O'l reciprocates the'cutter E, the said colony, both subjects of the Queen of in which the pin C9 on toes CS engage, over Great Britain,have invented new vand useful the comb D, so that all the hair or wool be- 5 5 Improvements in Sheep-Shearing Machines, tween the teeth D of said comb is sheared of which the following is a specification. or cut by the teeth E of said cutter. The

1o This invention relates to those machines necessary tension to keep the cutterEagainst having a cutter reciprocating over a combthe face of the comb is given to the lever C4 plate, principally used for shearing the wool by the tension-plate A', which is pressed down 6o from sheep and now generally termed sheepbythe head of nut A, pressing upon stud A7 shearing machines, and it has been devised and pressing the tension-plate upon friction- I5 in order to produce a neat and handy mapieces O7, the screw being held in place by chine for the purpose. spring-pawl A8.

Our invention consists in certain parts and In the inodication shown in Figs. 4, 5, and 65 combinations thereof, hereinafter more fully 6 the lever O is reciprocated in precisely the described and claimed 5 but in order that this same manner; butlever C4 turns upona second 2o invention may he clearly understood referfulcruin OX, while the end c tits between the ence will now be made to the drawings herejaws O3, so that the lever C acts as an interwith, in whichmediate reciprocating lever between femes- 7c Figures l, 2, and 3 are sectional elevation, tarB and lever O4. In this Vcase the tensionis plan with cover removed, and side elevation, given directly by the nut AG, having a springz5 respectively, of a sheep-shearing machine stop c2, which forces junk-ring cson flexible constructed according to this invention; and packing c4, and so presses lever C* downward Figs. 4, 5, and 6 are similar views of a modionto the cutter with flexibility, so that it may 75 ied construction of same. Fig. 7 is a front adjust'itself to the cutter and comb.

sectional elevation of the comb and cutter. Fig. 7 shows a preferred construction of 3o A is casing or frame; B, driving-spindle; the comb and cutter, ct being the straight face C, main lever; D, comb; E, cutter. of the comb and a the inside or concavity of A is cover and tension-plate hinged at A2; same, while b is the convex face of the cutter 8o A3 A3, bearings; A, stud or fulcrum; A, Z1. The concave face Ct and the convex b shoulder; AG,ratchet-nut; A7,stud; A8, springare ground a-nd sharpened upon a grinder or 3 5 pawl; A, snugs. stone having suitable faces, so that such con- B is a femestar or cam-grooved rotary veXity and concavity are obtained. head, and O diainetang or arm adapted to Having now particularly described and ex- 85 tit the groove of the said head and to be osplained the nature ot' our said invention and cillated by the rotation of the latter; B2, centhe manner in which the same is to be per- 40 ter-piece or steadying-pin; C2, slot; C3, jaws; formed, we declare that what we claim is- O4, lever; C5, friction-roller; C, screw; O7, l. In a sheep-shearing machine, the combifriction-pieces; O8, toes; C9, pins. nation and arrangement, with a comb and a 9o D are teeth 5 D2, fastening-screws. reciprocating cutter having a mainlever, such E are teeth; E2, pin-holes. as C, of the tension devices comprising a le- 45 In operation the spindle B is revolved by ver A', friction-pieces O7, astL1clA7,ath1eaded flexible shafting or other suitable means, and pin A4, a nut A", and a spring-pawl AS, subas the feinestar B at the end of said spindle stantially as herein described and explained, 95 turns a sidewise reciprocating motion is given and as illustrated in the drawings.

2. In a sheep-shearing machine, the combiouihands in presence of two subscribing wit- 1o nation and'arrangeinent, with mechanism foi1 nesses.

imparting motion to a reciprocating cutter, of PATRICK BLACKIE acornb having a concave inside or Working i JOHN NISBEI.

face and a movable cutter having a convex face setting in Jshe concavity of the coin b, sub- Witnesses:

stantially as herein described and explained, and as illustrated in the drawings.

In Witness whereof we have hereunto setl FRED. WALSH,

F. 1U. Inst. P. A., Sydney. THOMAS JAMES WARD. 

